A 200 g sample of soybean oil contains 25 % triglycerides. When it is heated at 200 °C for 3 h, 18 % of the triglycerides hydrolyze to free fatty acids. How many grams of free fatty acids are formed?

Step-by-step solution

1. Calculate the mass of triglycerides in the sample: $200\text{ g}\times 0.25=50\text{ g}$.
2. Determine the hydrolysed amount: $50\text{ g}\times 0.18=9\text{ g}$.
3. State the result: 9 g of free fatty acids are produced.
4. (Optional) Verify units: grams of fatty acids per 200 g oil.

Concept tested: Hydrolysis of triglycerides into free fatty acids

Published 9 September 2026 · How this solution was prepared and checked